The correct decreasing order of pKb is

Question

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/1261e5031adc13da6b746792d39476bc-.png" /> The correct decreasing order of pKb is (A) I > II > III > IV (B) III > IV > II > I (C) II > III > IV > I (D) IV > II > I > III

Tardigrade Admin · Accepted Answer

Substituent with strong +R effect, +I effect and weaker -I effect increases the basicity. Hence PKb decreases. Also, alkylamines are stronger bases than arylamines. So, the order is (d).

Q.
The correct decreasing order of $p K_{b}$ is

I > II > III > IV

III > IV > II > I

II > III > IV > I

IV > II > I > III

Substituent with strong $+$ R effect, $+ I$ effect and weaker $- I$ effect increases the basicity. Hence $P K_{b}$ decreases. Also, alkylamines are stronger bases than arylamines. So, the order is (d).

Q. The correct decreasing order of pKb​ is